期刊文献+

高压下多硅白云母的拉曼光谱学研究 被引量:18

A Raman spectroscopic study of phengite under high pressure
下载PDF
导出
摘要 在金刚石压腔中,通过原位拉曼光谱研究了多硅白云母在常温高压下的稳定性。实验获得了多硅白云母从常压到20GPa的拉曼光谱数据,研究了多硅白云母的266、708和3618cm-1谱峰与压力的相关性。研究发现,多硅白云母的708cm-1谱峰随压力增加有规律地向高频方向偏移,与压力的增加呈明显的正相关性,即y(拉曼位移,cm-1)=0.5238x(压力,GPa)+712.31,相关系数R2=0.9656,并且该谱峰在压力4.7GPa时消失,这可能与多硅白云母中的Si、Al替代有关。羟基3618cm-1谱峰则随压力增加向低频方向移动,谱峰的降低与压力的增加呈明显的线性关系变化(y=-0.3402x+3617.8,R2=0.9662),并且强度随着压力的增加也在逐渐减弱,在压力达18GPa时开始消失,推测该压力可能为多硅白云母在常温下脱羟基的极限压力。 Within the diamond anvil cell, the Raman spectroscopic study of phengite was developed at room temperature and under various pressures from 1 atmp to 20 GPa. The authors analyzed the correlation of the modes 266, 708 and 3 618 cm^-1 with the variation of pressure. The mode of 708 cm^-1 increases linearly with the increase of pressure, i.e. , y (Raman shift, cm^- 1 ) = 0. 523 8x (pressure, GPa) + 712.31, and R^2(correlation coefficient) = 0. 965 6, and the mode disappears at 4.7 GPa as a result of substituting Si for Al. The mode of OH^- band and the intensity decrease linearly with the increase of pressure, i.e. , y = - 0. 340 2 x + 3 617.8 and R^2 = 0. 966 2, and the mode disappears at 18 GPa, which is assumed to be the maximum pressure for the dehydration of phengite at room temperature.
出处 《岩石矿物学杂志》 CAS CSCD 北大核心 2006年第1期71-76,共6页 Acta Petrologica et Mineralogica
基金 国家自然科学基金资助项目(40325005 40228003) '国家973项目"中国西部大陆深俯冲作用的研究"课题资助(G1999075508)
关键词 多硅白云母 高压 拉曼光谱 相变 phengite high pressure Raman spectroscopy phase transition
  • 相关文献

参考文献16

  • 1Brown M.2001.From microscope to mountain belt:150 year of petrology and its contribution to understanding geodynamics,particularly the tectonics of orogens[J].Journal of Geodynamies,32:115~64.
  • 2Chaplin T D,Ross N L and Reynard B.2000.A high-temperature and high-pressure Raman spectroscopic study of CaGeO3 garnet [J].Phys.Chem.Minerals,27:213~219.
  • 3Chopelas A and Serghiou G.2002.Spectroscopic evidence for pressureinduced phase transitions in diopside[J].Phys.Chem.Minerals,29:403~408.
  • 4Cliff T,Johnston and Wang S.2002.Novel pressure-induce phase transformation in hydrous layered materials [J].Geophysical Research Letters,29,NO.0,10.1029.
  • 5Domanik K D and Holloway J R.1996.The stability and composition of phengitic muscovite and associated phases from 5.5 to 11 GPa:Implication for deeply subducted sediments [J].Geochimica et Cosmochimica Acta,60(21):4 133~4 150.
  • 6Holtzet M,Solin S A and Pinnavaia T J.1993.Effect of pressure on the Raman vibrational modes of layered aluminosilicate compounds[J].Physical review,48:312~317.
  • 7Kirby S,Engdahl E R and Denlinger R.1996.Intermediate-depth intraslab earthquakes and arc volcanism as physical expressions of crustal and uppermost mantle metamorphism in subducting slabs[J].American Geophysical Union,195 ~ 214.
  • 8Lin C C.2001.High-pressure Raman spectroscopic study of Co- and Niolivines[J].Phys.Chem.Minerals,28:249~257.
  • 9Mckeown D A,Bell M I and Edgar S E.1999.Vibrational analysis of the dioctahedral mica:2M1 muscovite[J].American Mineralogist,84:1041~1048.
  • 10Pan Zhaolu,Zhao Aixing and Pan Tiehong.1994.Crystallography and Mineralogy[M].Beijing:Geological Publishing House (in Chinese).

同被引文献166

引证文献18

二级引证文献61

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部